| Autor: |
Cantore Gianpaolo, Esposito Vincenzo, Osti Mattia, Cavallo Luigi, Clarke Enrico, Minniti Giuseppe, Cappabianca Paolo, Enrici Riccardo |
| Jazyk: |
angličtina |
| Rok vydání: |
2011 |
| Předmět: |
|
| Zdroj: |
Radiation Oncology, Vol 6, Iss 1, p 36 (2011) |
| Druh dokumentu: |
article |
| ISSN: |
1748-717X |
| DOI: |
10.1186/1748-717X-6-36 |
| Popis: |
Abstract Purpose to assess the safety and efficacy of fractionated stereotactic radiotherapy (FSRT) for large skull base meningiomas. Methods and Materials Fifty-two patients with large skull base meningiomas aged 34-74 years (median age 56 years) were treated with FSRT between June 2004 and August 2009. All patients received FSRT for residual or progressive meningiomas more than 4 centimeters in greatest dimension. The median GTV was 35.4 cm3 (range 24.1-94.9 cm3), and the median PTV was 47.6 cm3 (range 33.5-142.7 cm3). Treatment volumes were achieved with 5-8 noncoplanar beams shaped using a micromultileaf collimator (MLC). Treatment was delivered in 30 daily fractions over 6 weeks to a total dose of 50 Gy using 6 MV photons. Outcome was assessed prospectively. Results At a median follow-up of 42 months (range 9-72 months) the 3-year and 5-year progression-free survival (PFS) rates were 96% and 93%, respectively, and survival was 100%. Three patients required further debulking surgery for progressive disease. Hypopituitarism was the most commonly reported late complication, with a new hormone pituitary deficit occurring in 10 (19%) of patients. Clinically significant late neurological toxicity was observed in 3 (5.5%) patients consisting of worsening of pre-existing cranial deficits. Conclusion FSRT as a high-precision technique of localized RT is suitable for the treatment of large skull base meningiomas. The local control is comparable to that reported following conventional external beam RT. Longer follow-up is required to assess long term efficacy and toxicity, particularly in terms of potential reduction of treatment-related late toxicity. |
| Databáze: |
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| Externí odkaz: |
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